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6e01fc8dce
Added new _STRCMP and _STRICMP commands for quick string comparisons. Cleaned up QB64 to finish removing the QUI (quick user insert) code and folders. Altered UCASE and LCASE routines to be faster in some situations for us.
61 lines
2.5 KiB
Plaintext
61 lines
2.5 KiB
Plaintext
The [[WRITE (file statement)|WRITE #]] file statement writes a list of comma separated variable values to a sequential file or port.
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{{PageSyntax}}
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:{{KW|WRITE (file statement)|WRITE #}}{{Parameter|filenumber%}}[, {{Parameter|expressionList}}]
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{{PageDescription}}
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* {{Parameter|filenumber%}} is the number(1 to 255) of the file or device {{KW|OPEN}}ed in the {{KW|OUTPUT}} or {{KW|APPEND}} modes. See: {{KW|FREEFILE}}.
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* {{Parameter|expressionList}} is a comma-separated list of values to be written to the file or device.
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* WRITE can place any number and types of variable values needed in a file record separated by commas.
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* String values will have quotation marks although quotes are not required to read strings in CSV files with [[INPUT (file statement)|INPUT]] #.
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* Data files using WRITE normally will have the same number of values listed on each file line.
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* Data containing commas must be in quotation marks. Number commas are illegal!
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* WRITE created files are normally read with INPUT #.
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* CSV files created can be read by Excel using a .CSV file name extension. Strings may or may not include quotation marks.
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* [[Semicolon]]s cannot be used in or following the WRITE statement!
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''Example:'' Writes new data to a text file sequentially and reads it back to the program screen.
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{{CodeStart}} '' ''
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filename$ = "testfile.dat"
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x = 1: y = 2: z$ = "Three"
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{{Cl|OPEN}} filename$ {{Cl|FOR...NEXT|FOR}} {{Cl|OUTPUT}} {{Cl|AS}} #1 'opens and clears an existing file or creates new empty file
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{{Cl|WRITE (file statement)|WRITE}} #1, x, y, z$
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{{Cl|CLOSE}} #1
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{{Cl|PRINT}} "File created with data. Press a key!"
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K$ = {{Cl|INPUT$}}(1) 'press a key
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{{Cl|OPEN}} filename$ {{Cl|FOR (file statement)|FOR}} {{Cl|INPUT (file mode)|INPUT}} {{Cl|AS}} #2 'opens a file to read it
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{{Cl|INPUT (file statement)|INPUT}} #2, a, b, c$
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{{Cl|CLOSE}} #2
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{{Cl|PRINT}} a, b, c$
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{{Cl|WRITE}} a, b, c$
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{{Cl|END}} '' ''
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{{CodeEnd}}
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: ''File content:'' [[WRITE]] string values will include quotation marks, but they are not required to read the file.
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{{TextStart}}1,2,"Three" '' '' {{TextEnd}}
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: ''Screen output:'' [[PRINT]] string values will not display enclosing quotes. [[WRITE]] screen displays will.
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{{OutputStart}} 1 2 Three
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1,2,"Three"
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{{OutputEnd}}
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{{PageSeeAlso}}
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* [[PRINT (file statement)|PRINT #]]
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* [[INPUT (file statement)|INPUT #]]
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* [[LINE INPUT (file statement)|LINE INPUT #]]
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* [[SQL Client]] {{text|(library)}}
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{{PageNavigation}} |